Science 5 · Unit 5: Forces and magnetism · Cambridge Primary Science Stage 5

Questions

1. 1. What is a satellite?

   • a kind of star
   • a body that orbits a larger body in space
   • a planet that doesn't move
   • a rocket engine
   Check

2. 2. What type of satellite is the Moon?

   • a planet
   • an artificial satellite
   • a natural satellite
   • a star
   Check

3. 3. What is an artificial satellite?

   • a star
   • a cloud
   • a satellite made by people and put into space
   • the Moon
   Check

4. 4. Which force attracts the Earth and the Moon to each other?

   • upthrust
   • gravity
   • friction
   • magnetism
   Check

5. 5. The Earth has much more mass than the Moon. Which one orbits the other?

   • the Moon orbits the Earth
   • the Earth orbits the Moon
   Check

6. 6. What does the amount of gravity depend on?

   • how fast they spin only
   • the size of the objects and how close they are
   • their colour
   • the time of day
   Check

7. 7. What path would the Moon take if there were no gravity?

   • a smaller circle
   • it would stop
   • it would fall to Earth
   • a straight line away into space
   Check

8. 8. What launches an artificial satellite into space?

   • a big catapult
   • aeroplanes
   • balloons
   • powerful rockets
   Check

9. 9. Why must a satellite travel very fast when it is launched?

   • to overcome the force of gravity pulling it back to Earth
   • to stay cool
   • to make it heavier
   • to avoid birds
   Check

10. 10. What keeps a satellite in orbit around the Earth?

    • its engines pushing forever
    • magnets
    • gravity pulling it towards the centre of the Earth
    • air holding it up
    Check

11. 11. What happens to a satellite if it slows below orbit speed?

    • It gets faster.
    • It flies off into space.
    • It falls back to Earth.
    • It stops in the air.
    Check

12. 12. How are weather satellites useful?

    • They stop cyclones.
    • They make it rain.
    • They take photographs that help predict the weather.
    • They grow crops.
    Check

13. 13. What else do artificial satellites provide?

    • drinking water
    • oxygen
    • electricity for homes
    • TV signals and GPS
    Check

14. 14. What is the International Space Station?

    • a rocket on the ground
    • a planet
    • an artificial satellite where scientists live and work
    • a natural satellite
    Check

15. 15. What often provides the power to keep an artificial satellite working?

    • wind
    • petrol
    • solar panels
    • coal
    Check